Differential hoisting-gear



2 Sheets-Sheet l.

(No Model.)

o. G. TOENSE.- DIFFERENTIAL HOISTING GEAR.

No. 366,278. Patented'July 1.2, 1887.

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(No Model.) f 2 sheets-sheen 2.

C. G. TOENSE.

DIFFERENTIAL EOISTING GEAR.

No. 366,278. Patented July 12, 1887.

"' EEE as N x@ N\ "m f n i E UNITED STATES PATENT EEicE.

CARL G. TOENSE, OF CLEVELAND, OHIO.

DIFFERENTIAL HOISTING-I-GEAR.

SPECIFICATION forming part of Letters Patent-No. 366,278, dated July 12, 1887.

Application filed September Il, 1886. Serial No. 212,574. (No model.)

To all whom t may concern.-

Be it known that I, CARL G. TOENSE, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Differential Hoisting- Gear, of which the followingisa speciiication.

The object' of this invention is to provide a new and improved differential hoisting-gearing, in which the friction is reduced to a minimum, and which hoist is of simple construction.

The invention consists of the combination, with a drum having a toothed ring on the inside, of reciprocating pawls operated by an eccentric from the drivingshaftwithin the drum, all as will be fully described and set forth hereinafter, and pointed outin the claims.

In the accompanying drawings, Figure lis a plan View of my improved gearing. Fig. 2 is a cross-sectional view. Fig. 3 is a longitudinal sectional elevation of the gearing; and Fig. 4 is a cross-sectional view on the line g/ z/,Fis- .t

Similar letters of reference indicate correspending parts. l

The drum A is composed of two flanged sections, A' and A2, which are mounted to rotate on the sleeves B B2, respectively, said sleeves being journaled and clamped in the bearings C C, and in said sleeves the shaft D is mounted to revolve. Driving-pulleys D are mounted on one end of the shaft. Between the flanges of the drum-sections A AZ7 a flange, E', of an internally-toothed ring, E, is placed, and bolts are passed through the same and the iianges of the drum-sections A A, the teeth ofthe ring E projecting from the inner snrface ofthe drumseetion A, as shown in Fig. 4. The sleeves B B2 are provided at their inner or adjacent ends with heads, between which a series of sleeves, G, are inserted,

through which the bolts H are passed longitudinally, said bolts being provided with snitable heads and nuts. Thereby a chamber, II, is formed between the heads of the two sleeves. Between t-he heads of the two sleeves B' Bithe shaft D is provided with an eccentric part, J, passing through the inner ends of two rocking pawls', K, mounted to swing on the shafts L, pivoted on arms or links M, projecting down` the upper right-hand sleeve and the other on the lower left-hand sleeve.

The operation is as .,follows: The shaft D is revolved by means of belts, chains, or other devices, and as the rocking pawlsK, mounted on said shaft, engage with the teeth of the ring E, said toothed ring E and the drum are also revolved. By the revolutions of the shaft D the pawls K are reciproeated at the same time that they revolve, and when the toothed end of one pawl is engaged with the teeth of the ring E the other is disengaged, and so on alternately, said alternating engaging and disengaging taking place for each revolution of the shaft D. During the half of a revolution the changing of the position of the pawls tak es place, and during the other half but one pawl remains engaged and acts with its full force on the teeth of the toothed ring. The pawls ad- Vance the distance of one tooth during each revolution, and thus the proportion of transmission is as one to half the number of teeth.

This gearing can be used for elevators, lireescapes, cranes, liftingvj acks, derricks, presses, driving-wheelsifor locomotives, belt-pulleys, 8vo., in ease the speed is to be reduced and loads to be lifted, and for all kinds of machinery. The gearing is always inclosed in the drum, and thus cannot become greasy or clogged, and cannot catch on the chains, pulleys, or objects to bev raised, and said drum also forms a chamber for containing the lnbricant.

Having thus described my invention, I claim as new and desire tosecure by Letters Patent l. In a differential gear, the combination, with a toothed ring, of revolving reciprocatingpawls engaging the teeth of said ring, substantiall y as shown and described.

2. A differential gearing consisting of a toothed wheel, a shaft having an eccentric,and reciprocating pawls and sleeves on the shaft, all combined substantially as shown and de scribed.

3. In a differential gear, the combination,

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withla drum, of a toothed Wheel on the inside of said drum and pivoted reciprocating pawls mounted'on an eccentric of the driving-shaft, substantially as shown and described.

4. In a differential gearing, the combination, with the driving-shaft, ot' sleeves mounted loosely on the same, reciprocating pawls mounted on links or arms between the inner ends of the sleeves and on an eccentric part of the shafty between the sleeves, and a drumV provided with a toothed ring, with the teeth of which ring the reciprocating pawls can en gage, substantially as shown and described.

5. The combination, with the shaft, of two sleeves mounted loosely on the same and having their ends connected by bolts and sleeves on the'druin, substantially as shown and described. v

In testimony that I claim the foregoing as my invention I `have signed my name in presence of two subscribing witnesses.

CARL G. TOENSE.

Witnesses:

J. W. SYKoRns, EDWARD DAVID. 

